The + addressing scheme is well known, and more talented spammers will easily avoid it. The problem of the catch all address has already been discussed. What

The + addressing scheme is well known, and more talented spammers will easily avoid it. The problem of the catch all address has already been discussed. What I want to see is a crypto hash of the domain (with a salt) and use a part of that as the e-mail address. And I want to automate the creation AMD use of that address in my MUA. So, when I respond to one of those messages, the MUA makes sure to use the right hash-based address as the sender.